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S_A_V [24]
3 years ago
12

Simon measures the depth of water in centimeters in his fish tank at the end of each day his measurements are shown.

Mathematics
1 answer:
NikAS [45]3 years ago
5 0

Answer:

D

Step-by-step explanation:

y = -1/2x + 18.5

check it by inserting the day number and comparing with the chart

y = -1/2(2) + 18.5

y = -2/2 + 18.5

y = -1 + 18.5

y = 17.5

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F(x) = 3x+2<br> What is f(5)?
Anni [7]

Answer:

the answer will be 17.

Step-by-step explanation:

if, f (x) = 3x + 2

f (5) = 3 × 5 + 2 = 17.

<em>Please mark me as the brainliest </em>

7 0
2 years ago
Read 2 more answers
A laboratory tested n = 98 chicken eggs and found that the mean amount of cholesterol was LaTeX: \bar{x}x ¯ = 86 milligrams with
Harrizon [31]

Answer:

1.3859

Step-by-step explanation:

The formula for Margin of Error is given as:

Margin of Error = Critical value × Standard Error

Critical value = z score

In the question, we are given a confidence interval of 95%.

Z score for a 95% confidence level is given as: 1.96

Hence, critical value = 1.96

Standard Error = σ / √n

Where n = number of samples = 98 chicken eggs

σ = Standard deviation = 7 milligrams

Standard Error = 7/√98

Standard Error = 0.7071067812

Hence, Margin of Error = Critical value × Standard Error

Margin of Error = 1.96 × 0.7071067812

Margin of Error = 1.3859292911

Therefore, the margin of error corresponding to a 95% confidence interval for the true mean cholesterol content, μ, of all such eggs is approximately 1.3859

8 0
3 years ago
I'll give 99 points
photoshop1234 [79]

Maximum height is at dH/dt=0

H= -16T^2+80T+5

dH/dt=-32T+80

-32T+80=0

32T=80

T=2.5s when height is max

Hmax=-16(2.5)^2+80*2.5)+5

=105ft

catching the ball at 5' means solve for T at H=5

H= -16T^2+80T+5=5

-16T^2+80T=0

-16T(T-5)=0

so T=0 cannot be the ans or T=5s


8 0
3 years ago
Read 2 more answers
relay race is 1 4 mile long and is run by 4-member teams. If each team member runs the same distance, what fraction of a mile do
sergejj [24]

Answer:

7/20

Step-by-step explanation:

I did the work but Im not sure if this is right i just need points to ask my question. But what i did was i did 14 divided by 4=3.5, then moved the decimal in front of the 3 to make .35 then turned that into a fraction 7/20. AGAIN I DONT KNOW IF ITS RIGHT DONT BLAME ME IF ITS NOT

8 0
2 years ago
At the end of the summer, Caitlin had saved $120 from her summer job. This was her initial deposit into a new savings account at
Vera_Pavlovna [14]
<span>Let x = represent the number of weeks of deposits
A = 120 + 5x the account balance after x weeks
The account balance is directly proportional to the number of weeks of deposits if:
A/x = constant
(120 + 5x)/x = 120/x + 5 is not a constant
For example:
After 1 week there will be: 120 + 1*5 = $125 on the account
After 2 week there will be: 120 + 2*5 = $130 on the account
After 3 week there will be: 120 + 3*5 = $135 on the account
But 125/1 <> 130/2 <> 135/3
The account balance is not proportional to the number of weeks of deposits.</span>
8 0
3 years ago
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